Journal Of Physics Research Articles

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Proceedings of NSB 2023: 13th Nordic Symposium on Building Physics 12th to 14th of June 2023 Aalborg, Denmark The 13th Nordic Symposium on Building Physics (NSB 2023) took place at Aalborg University in the city of Aalborg, Denmark, from the 12th to the 14th of June, 2023. This conference was organised by the Department of the Built Environment of Aalborg University, with the help of fellow researchers from Aarhus University, the University of Southern Denmark and the Technical University of Denmark.NSB is a renowned international conference series in Building Physics, held every three years since 1987. Although organised in Nordic countries, the conference is in English and is not limited to cold climates. It has grown to attract participants worldwide, to the point that more than half of the participants have been from other countries.This symposium is intended to be a forum for scientists, practitioners, PhD students and other building professionals to share new research results, demonstrate innovative and sustainable building technologies, and discuss current and future challenges and solutions within building physics, heat, air and moisture transfer in buildings, and on aspects of moisture problems in the built environment, energy performance and indoor environmental quality. The NSB 2023 central theme is “Building physics as a key player for the sustainable built environment”. The conference focus is primarily on the following aspects that all require a throughout understanding of building physics:• Heat, air and moisture transport• Measurement and modelling techniques• Material properties• Contaminant transfer (gas phase, airborne pollutants)• Outdoor and indoor climate for building physics analysis• Hygrothermal performance of building envelope• Advanced building envelope systems• Air-tightness, air movement inside and around the buildings• Building materials and components• Facades• Climate change and climate adaptation of buildings• Moisture and mould problems• Investigation methods of moisture and microbial damages• Moisture safety in design, construction, and maintenance• Durability of materials and structures• Repair methods• Architectural design integration• Interaction with HVAC systems and solar shading• Indoor environmental quality: air quality, daylight, thermal comfort and acoustics• Passive, active and low-energy buildings, zero-emission buildings• Retrofitting and conservation of buildings, including historical buildings• Building sustainability and circularity• Integrated BIM solutions for building physics, energy performance and indoor environmental quality• Education about building physics: innovative tools and methodsThe 250 participants of NSB 2023 attended a total of 3 keynotes, 186 paper presentations (149 Scientific Papers and 37 Technical Papers) and one workshop over 3 days and 34 sessions. The Scientific Papers (6-8 pages) are published in the present IOP Journal of Physics: Conference Series proceedings. The Technical Papers (1-6°pages) are published by Aalborg University in a dedicated book of technical papers. All papers presented at NSB 2023 and published in the proceedings or book of technical papers went through a 3-stage double-blind peer-review process: review and acceptance of the abstract, first round of review for the full paper, second round of review of the revised paper, final decision on the paper. All reviews were conducted by the 124 members of the scientific community.List of Conference organising committee, Scientific Committee are available in this Pdf.

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The 2023 7th International Conference on Mechanics, Mathematics and Applied Physics (ICMMAP 2023) took place in Dalian, China during 8th to 10th September 2023. The conferences in this series started in 2017 as an academic conference and gradually expanded to include wider topic fields as well. Now the International Conference on Mechanics, Mathematics and Applied Physics has been developed into an annual international conference based in China with topics encompassing the whole area of mechanics, mathematics and applied physics.The aim of the Conference was to provide a platform for the exploration of both fundamental topics and new applications of research fields related to mechanics, mathematics and applied physics, bring different scientific communities together, and thus facilitate the contacts between science, technology and industry. All the attendees were welcomed to give comments and raise questions to the speeches and presentations during the Conference.More than 100 participants attended the Conference which consisted of ten keynote speeches, as well as plenty of oral and poster contributions. Among them, Prof. Zhenxin Liu (Dalian University of Technology, China), who is interested in the researches on Stochastic Dynamical Systems and Stochastic Differential Equations, delivered a keynote speech on The Averaging Principle for SDEs with Monotone Coefficients. And Prof. Chongjun Li (Dalian University of Technology, China) made a report on Revised SBFEM on Arbitrary Polygons and Faceted Polyhedrons with the Second Order Completeness by Elimination of Bubble Functions. He focuses his research on Numerical Approximation, Computational Geometry, Multivariate Spline Theory, and Spline Finite Elements. And the other speakers performed their speeches one by one, sharing research experience and professional insights on specific topics. It is really a great opportunity to promote academic communication and collaboration worldwide.This volume gathers papers from regular contributions of ICMMAP 2023; each contribution submitted for publication has been peer reviewed and the Editors are very grateful to the referees for their careful support in improving the original manuscripts. The manuscripts accepted for publication cover different topics of mechanics, mathematics and applied physics: Computational Mechanics, Multiphase Fluid Mechanics, Partial Differential Equation, Simulation and Monte-Carlo Methods, Nuclear Electronics, etc.It is a great honor to present this volume of Journal of Physics: Conference Series and we deeply thank the authors for their enthusiastic and high-grade contribution.Finally, we would like to thank the Conference Chair, the Publication Chair, the members of the Technical Program Committee as well as Organizing Committee, the conference secretariat and the support from Dalian Jiaotong University that allowed the success of ICMMAP 2023.The Committee of ICMMAP 2023List of Committee Member are avaible in this pdf.

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This volume of Journal of Physics: Conference Series is dedicated to 2023 3rd International Conference on Power System and Energy Internet (PoSEI 2023) supported by Murdoch University, Australia, held during 28th–30th July 2023 in Qingdao, China (virtual conference). The Conference, focused exclusively on recent trends of research in power system and energy Internet, attracted about 80 participants around the world.The immediate purpose of this Conference was to bring together experienced as well as young scholars who are interested in working actively on various aspects of power system and energy Internet, in order to share and discuss recent related researches. And the ultimate plan is to make it a regular event every year based on the very positive response we received which was beyond our expectation.The keynote speeches addressed major theoretical issues, current and forthcoming observational data as well as upcoming ideas in both theoretical and observational sectors. Keeping in mind the principle academic exchange first, the lectures were arranged in such a way that the young researchers had ample scope to interact with the stalwarts who are internationally leading experts in their respective fields of research.Besides the keynote speeches, a good proportion of the participants also presented their work through contributory talks and posters on this big platform. This was particularly encouraging and of benefit to the young participants, given that there were a good number of scientists of international repute among the participants, the feedback from whom could guide them in the right direction. All the contributions were refereed by experts rigorously.The major topics covered in the Conference are: Cogeneration and Distributed Generation, Power Quality and Electromagnetic Compatibility, Energy Efficiency and Energy Management, Information and Communication for Energy Internet, Sensor and Micro-machines, etc.We are indebted to the Murdoch University, Australia for providing us with generous support to organize such a huge conference. We thank all the members of the Conference Committee who contributed their hard labour to make the Conference a great success. We gratefully acknowledge the experts and reviewers for their valuable suggestions on the review process of the papers submitted.We sincerely thank the staff of Journal of Physics: Conference Series for their efforts in the publication of this issue. Last but not the least, we thank all the speakers and participants without whom the Program would not have been such a success. We hope we will have your active participation in the future conference versions of PoSEI as well.The Committee of PoSEI 2023List of Committee Member is available in this Pdf.

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The 2023 3rd International Conference on Electrical Engineering and Computer Technology (ICEECT 2023), a virtual conference, was held during September 22nd–24th, 2023 in Nanjing, China, bringing together about 80 participants around the world.It is well known that technological advancements have made our learning continuous. It is high time for engineers and technocrats to think about innovation and contribute to technological advancements. Technological advancements at an exceptional rate could only take place by exchanging thoughts, ideas, innovations, problems, real-time solutions to the problems and technologies.ICEECT 2023 has provided such a platform for researchers, engineers, academicians, industrial professionals, and practitioners of Electrical Engineering and Computer Technology fields from all over the globe. It has kindled validated discussions on the technological advancements, recent trends, various issues of sustainability, and the solutions adopted to address these issues in the amalgamating fields of Electrical Engineering and Computer Technology by embodying innovative ideas and pivoting advanced technologies. Emphasis was attributed to the recent developments in the fields of Electrical Engineering and Computer Technology.The Conference was made stimulating and informative by keynote speeches delivered by the pioneers of the fields from different corners of the world as well as many oral and poster presentations. Among the many speakers, Marco C. Campi, acting as one of our keynote speakers, is a Professor of Automatic Control at the University of Brescia, Italy, where he has taught topics related to data-driven control, systems theory, and inductive methods for more than twenty-five years. He has delivered plenary addresses at major conferences, including CDC, MTNS, and SYSID. And another keynote speaker Lei Chen is currently an Associate Professor at the School of Information Science and Engineering, Shandong University, China. His research interests include Image Processing and Computer Vision, Visual Quality Assessment and Pattern Recognition, Machine Learning and Artificial Intelligence. They both made dramatic speeches employing their research experience and professional insights. What’s more, attendees interacted actively with each other, exchanging views on the topics concerned and sharing their unique experience on the development trends and research directions.We would like to address our sincere thanks to the eminent speakers, the Technical Committee members, authors, reviewers, participants, the esteemed associates of the Conference, and all the members who have supported the Conference. Special acknowledgement to the staff of Journal of Physics: Conference Series for all their efforts in making this volume published.The Committee of ICEECT 2023List of Committee Member are availble in this pdf.

3rd National Forum on Contemporary Space Research (NaFSKI 2022), November 10-12, 2022, Sofia TechPark, Bulgaria

The National Forum on Contemporary Space Research is an initiative of the “Cosmos” Branch of the Union of Physicists in Bulgaria aiming to promote space research networking both on national and international levels. The event was shaped as a platform where the Bulgarian researchers meet, discuss, and collaborate. The Forum is held under the auspices of the Bulgarian Ministry of Innovation and Growth with the financial support of the Sofia University St. Kliment Ohridski, “America for Bulgaria” Foundation and “Evrika” Foundation.The first edition of the Forum took place in 2020 and it proved the idea is timely and successful. The second edition of the Forum was organized as a 3 days event in Sofia TechPark “Incubator” in October 2021 and attracted even more attention. Thus it was natural to continue the Forum as annual event and to hold the 3rd edition in November 2022.The program and presentations during the Forum are available at https://bulgarianspace.online/nafski2022/The Forum programme was organized in 3 sections: “Business and Cosmos”, “Science and Cosmos” and “Education and Cosmos”. The presenters in the “Science and Cosmos” session were invited to contribute to the Proceedings of the 3rd edition of the National Forum on Contemporary Space Research. The collected papers passed a peer-review process and we are proud to present the collection to the readers of the Journal of Physics – Conference Series. The papers are separated in three categories, according to the topic: fundamental space science research, aerospace technologies and Earth observations.List of Programme Committee, Local Organizing Committee are available in this Pdf.

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Preface This book contains the selected papers from the 2023 International Conference on Big Data, Information and Intelligent Engineering which was held on September 17-18, 2023, Hubei Zhongke Institute of Geology and Environment Technology, Wuhan, China. It provides the scholars and researchers with an effective medium for communicating important recent developments in their areas of specialization to colleagues and to scientists in related disciplines. We had the honor of inviting Jerry Chun-Wei Lin, ACM Distinguished Scientist, IEEE Senior Member, Fellow of IET, Western Norway University of Applied Sciences, Norway., to serve as our Conference Chairmen. 130 individuals and enterprises all over the world attended the conference. Divided into three parts, the conference agenda covered keynote speeches, oral presentations, and online Q&A discussion. Firstly, keynote speakers were each allocated 30-35 minutes to hold their speeches. Then in the oral presentations, the excellent papers selected were presented by their authors one by one 15-20 minutes.On behalf of the conference BDIIE 2023 organizing committee, we would like to express our deeply appreciation to all the keynote speakers, oral speakers peer reviewers, and all the participants and supporters. More than anything, we would like to acknowledge the Journal of Physics: Conference Series, for the efforts and help of all the colleagues in publishing this paper volume. We really expect the opportunity for future collaborations.The book contains 54 peer-reviewed papers, selected from more than 92 submissions and ranging from the theoretical and conceptual to strongly pragmatic and addressing industrial best practice. It covers Big Data, Engineering Applications and Scientific Computations, Information Engineering, Artificial Intelligence, Simulation of Intelligent Systems.The book shares practical experiences and enlightening ideas and will be of interest to researchers in and practitioners everywhere.List of Committee is available in this Pdf.

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The 2023 3rd International Conference on Mechatronics Technology and Aerospace Engineering (ICMTAE 2023) took place in Nanchang, China from September 15th to 17th, 2023, with the attendance of about 120 people. The main goal was to bring together scientists, researchers and developers engaged in mechatronics technology and aerospace engineering to bridge the gap between research needs and advanced technological solutions.ICMTAE 2023 focused on research areas such as Aerospace Structures, Aircraft Flight Dynamics, Precision Plastic Forming and Equipment Technology, Spacecraft Thermal Control Technology, Satellite Remote Sensing Technology, etc. The Conference provided an opportunity for researchers and related personnel to present their recent theoretical developments as well as practical applications, discuss unsolved problems, and find solutions to them. And it fostered research and development in mechatronics technology and aerospace engineering.The Program of the Conference was divided into three parts. First day of the Conference was devoted to registration for all the participants. The second day was mainly focused on keynote speeches, oral and poster presentations, as well as free discussion, etc. Academic investigation took place during the third day of the Conference.We would like to highlight the main developments presented at the Conference and introduce the prominent speakers. The keynote speakers of the Conference are Prof. David Doermann (University at Buffalo, US), Prof. Shaojiang Dong (Chongqing Jiaotong University, China), Prof. Baochang Zhang (Beihang University, China), Assoc. Prof. Liping Tang (Southwest Petroleum University, China), Prof. Shaojian Zhang (Nanchang University, China), Prof. Alam Md Mahbub (Harbin Institute of Technology (Shenzhen), China), respectively. They shared remarkable academic achievements in fields related to mechatronics technology and aerospace engineering, and discussed critical challenges and research directions within these domains, triggering heated discussion during the Conference and even in the break.In the final foreword, we would like to thank the members of Technical Program Committee and those of Organizing Committee for giving such a great opportunity for all of us to share scientific ideas and new developments at the Conference. Last but not the least, our special acknowledgement also goes to the editors and staff of Journal of physics: Conference Series, for their kindness and assistance in publishing this Conference Proceedings.The Committee of ICMTAE 2023List of Committee Member are available in this pdf.

Angular Momentum Conserving Limiters for the Euler Equations

Limiters that are used to stabilise the discontinuous Galerkin method fail to preserve its angular momentum conservation property. We propose a simple technique that restores the conservation of angular momentum while preserving the second-order accuracy of the scheme when paired with an explicit time integrator. Numerical experiments confirm the conservation property of the technique paired with two limiters [Giuliani and Krivodonova. 2018. “Analysis of Slope Limiters on Unstructured Triangular Meshes.” Journal of Computational Physics 374: 1–26; Giuliani and Krivodonova. 2019. “A Moment Limiter for the Discontinuous Galerkin Method on Unstructured Triangular Meshes.” SIAM Journal on Scientific Computing 41 (1): A508–A537]. We show that the technique eliminates numerical artifacts that arise from limiting solutions to the Euler equations.

A class of bound-preserving MUSCL-Hancock schemes in two dimensions

In this paper we discuss the MUSCL-Hancock scheme for the two-dimensional conservation laws and derive the bound-preserving conditions by a parameterized convex decomposition method which is proposed in [Journal of Computational Physics, 474:111805, 2023] for one-dimensional problems. The CFL number equals the half of the one-dimensional value and then ensures the speed-up compared with the classical two-stage MUSCL scheme. The bound-preserving slope limiter on the preliminary reconstruction becomes problem dependent. The maximum-minimum preserving slope limiter for the scalar problems becomes the same with its one-dimensional version. A positivity-preserving slope limiter for the Euler system is designed including a different parameter from the scalar problems and more efficient operators than the existing limiters. Numerical experiments are reported to demonstrate the robustness of the proposed scheme.

Parallel-in-time multiple shooting for optimal control problems governed by the Navier–Stokes equations

In the past decades, multiple shooting methods have proven to be a promising direction to speed up the optimization process, especially in the context of ODE-based optimization. Very recently, Fang et al. (Journal of Computational Physics, vol. 452, 110926, 2022) proposed a multiple shooting algorithm for large-scale PDE-constrained optimization. The current paper continues this line of work and explores the potential of multiple shooting methods for optimal control problems governed by the three-dimensional Navier–Stokes equations. Similar to Fang et al., the augmented Lagrangian (AL) method is used to solve the resulting equality-constrained optimization problem, and we employ the classical limited-memory BFGS method for the unconstrained subproblems inside the AL loop. In the current work, we exploit the multiple shooting paradigm in full by processing the shooting windows parallel-in-time, allowing for significant parallel speed-ups compared to single shooting. The proposed method is validated on a velocity tracking case, using up to 100 windows. Our analysis shows that the multiple shooting algorithm allows for considerable algorithmic and parallel speed-ups. While algorithmic speed-up depends on the exact tracking case and initialization of the shooting windows, the multiple shooting algorithm always outperforms single shooting in terms of computational time (if the number of windows is sufficiently high) due to the parallel-in-time implementation. For a given amount of resources, we also show that the proposed parallel-in-time strategy can outperform spatial parallelization alone, especially when the spatial parallelization is saturated.

Approaches to Establishing National Diagnostic Reference Levels for Computed Tomography: A Systematic Review

Background: The international commission on radiation protection (ICRP) publican 135 recommends that Diagnostic Reference Levels (DRLs) should be tied to defined technical and patient parameters for the imaging task. Whereas for computed tomography (CT) examinations, DRLs are defined in terms of two established technical parameters namely, Volume-based Computed Tomography Dose Index (CTDIvol) and Dose Length Product (DLP), a debate has ensued as to whether patient size, age and weight or clinical indication should be used as patient parameters. The objective of diagnostic reference levels (DRLs) is to assist in the optimisation of radiation dose to the patients while maintaining diagnostic image quality. It is generally accepted that each country requires having national DRLs to guide the practice of radiography regarding dose optimization as a prerequisite to good radiation protection practice. Objective: This review aimed to establish commonly used approaches to establishing national diagnostic reference levels for computed tomography. Methods: A systematic literature search in databases containing leading journals in radiography, radiology and medical physics was performed aided by the use of carefully selected search terms that relate to CT and DRLs. The literature search was achieved by the use of the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) flow chart. A total of 109 studies were screened out of which 54 were excluded and 55 sought for retrieval. After further assessment for quality, 20 studies were included in this study for review. Key Findings: 95% of the studies in this review used CTDIvol and DLP as technical parameters indicating dose. 70% of the studies reviewed used patient size, age and weight while 30% used clinical indication as patient parameters. 30% of the reviewed articles did indicate that the surveys to establish NDRLs employed a retrospective approach, while 35% employed a prospective approach and 35% did ..

Mechanical stability criterions of cubic Na2He up to 500 GPa

The Cauchy pressure Cp was usually used to explain the atomic bonding character in a compound, while the mechanical stability criterions are usually used to study the stability of the structure under external compression. Using the elastic constants reported recently by Zahidur Rahaman et al. in Chinese Journal of Physics, 56 (2018) 231-237, as well as different mathematical formula, we reported on the Cauchy violation and the generalized mechanical stability criterions of cubic Na2He compound under high hydrostatic compression from 100 GPa to 500 GPa. For pressures ranging from 100 to 500 GPa, all values of both Cauchy pressure Cp and the generalized mechanical stability criteria G are negative. In addition we calculated the Debye temperature θD of Na2He compound using Siethoff’s approach. The results obtained are slightly lower than those obtained from the Debye approach reported by Zahidur Rahaman et al.

S-matrix on effective string and compactified membrane

Expanding Nambu–Goto action near infinitely long string vacuum one can compute scattering amplitudes of 2d massless fields representing transverse string coordinates. As was shown in (Dubovsky et al 2012 J. High Energy Phys. JHEP09(2012)044), the resulting S-matrix is integrable (provided appropriate local counterterms are added), in agreement with known free string spectrum and also with an interpretation of the static-gauge NG action as a deformation of a free massless theory. We consider a generalization of this computation to the case of a membrane, expanding its 3d action near an infinite membrane vacuum that has cylindrical shape (we refer to such membrane as ‘compactified’). Representing 3d fields as Fourier series in S 1 coordinate we get an effective 2d model in which the massless string modes are coupled to an infinite KK tower of massive 2d modes. We find that the resulting 2d S-matrix is not integrable already at the tree level. We also compute 1-loop scattering amplitude of massless string modes with all compactified membrane modes propagating in the loop. The result is UV finite and is a non-trivial function of the kinematic variables. In the large momentum limit or when the radius of S 1 is taken to infinity we recover the expression for the 1-loop scattering amplitude of the uncompactified membrane. We also consider a 2d model which is the deformation to the free theory with the same massless plus infinite massive tower of modes. The corresponding 2d S-matrix is found, as expected, to be integrable. Contribution to the special issue of Journal of Physics A: ‘Fields, Gravity, Strings and Beyond: In Memory of Stanley Deser’

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The 1st International Conference on Precision Machinery and Manufacturing Technology 2015 (ICPMMT) was held at Howard Beach Resort, Kenting, Taiwan on May 22-24, 2015. The papers submitted to ICPMMT 2015 were recommended to KEM (EI Compendex) through the peer reviewing process. The 2nd ICPMMT 2017 was held at Howard Beach Resort, Kenting, Taiwan on May 19-21, 2017. And the 3rd ICPMMT 2018 has moved to Auckland, New Zealand on 4-8 February, 2018. After conference, all papers submitted to ICPMMT 2017 and 2018 were recommended to MATEC Web of Conferences, Open-access Journal in Materials science, Engineering and Chemistry (Google Scholar, CAS, EI Compendex, Inspec, DOAJ, Web of Science, Scopus). All papers through the peer reviewing process could be published in MATEC Web of Conferences. The 4th ICPMMT 2019 was back to Howard Beach Resort, Kenting, Taiwan on May 24-26, 2019. All papers through the peer reviewing process can be published Key Engineering Materials and IOP: Materials Science Engineering with EI Compendex. The 5th ICPMMT 2020 was taken place in Crowne Plaza, Auckland, New Zealand on February 3-7 2020. Some papers through the peer reviewing process have been published in Journal of Physics: Conference Series, and Solid State Phenomena with EI Compendex. The 6th ICPMMT 2021 was back to Howard Beach Resort, Kenting, Taiwan on May 21-23, 2021. The 7th ICPMMT 2022 because of COVID-19 still held in Howard Beach Resort, Kenting, Taiwan on May 20-22, 2022. Some full papers through the peer reviewing process were be published in Journal of Physics: Conference Series with EI Compendex.Since 2022 JPCS started to request all full papers to upload the Morressier submission system for the reviewing process. The similarity of all full papers should be checked to keep the papers quality well. The 8th ICPMMT 2023 due to COVID-19 still took place in Howard Beach Resort, Kenting, Taiwan on May 19-21 2023. All full papers accepted through very strict peer reviewing process can be recommended to Journal of Physics: Conference Series (JPCS) with EI Compendex Publication. However, the committee cannot guarantee all papers can be published in JPCS, because JPCS team will review again just depends on the paper quality, the scope, and the reviewers’ comments. Therefore, the full papers publication decided by JPCS team can be published in Journal of Physics: Conference Series with EI Compendex.List of Committee of ICPMMT 2023 are available in this pdf.

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National Physics Seminar (SNF) 2023 Surabaya State University on the Integration of Free Learning in the Era of Society 5.0 Through Physics Innovation and Physics Education Towards Sustainable Development Goals (SDGs) 2030 We proudly present Seminar Nasional Fisika (SNF) 2023, Department of Physics, Universitas Negeri Surabaya (Unesa). This year, SNF, held on 26 August 2023 in Surabaya, is an essential event in our academic calendar. In our big theme, “Integration of Independent Learning in the Era of Society 5.0 Through Physics Innovation and Physics Education Towards Sustainable Development Goals (SDGs) 2030,” we try to explore the potential and challenges faced in achieving sustainable development through physics and physics education. The event was held via ZOOM meeting to facilitate SNF participants from within and outside the country. Participants are also unrestricted by time, accommodation, and other activity agendas.The success of SNF 2023 will only be possible with valuable contributions from various parties. We are very grateful to our three keynote speakers, namely Prof. Ir. Adi Susilo, Ph.D., Prof. Dr. Parmin, M.Pd, and Prof. Nadi Suprapto, Ph.D., who have provided in-depth insight into the development of physics and physics education in the Society 5.0 era. Thank you also to the Dean of the Faculty of Mathematics and Natural Sciences (FMNS) Unesa, Prof. Dr. Wasis, M.Si, who gave an inspiring opening speech.The event was held in two sessions: plenary and parallel session. The plenary session presented three keynote speakers. The parallel sessions were attended by invited speakers and authors presenting their papers and held in eight breakout room groups. As a scientific forum, SNF 2023 was attended by 443 participants consisting of students, teachers, lecturers, engineers, and practitioners who participated both as presenters and participants. The SNF 2023 aims to share ideas and knowledge and build collaboration. We received 81 papers selected for publication in the Journal of Physics: Conference Series with a scope of physics and related fields. In this volume, we accepted 52 papers for publication after fulfilling the scope, checking for originality, and conducting peer review. We hope this event can be a starting point for welcoming global developments. Besides, the publications packaged in this seminar will further strengthen the existence and reputation of the physics department as an educational institution that is superior in scientific publications at national and international levels. The research results must be disseminated widely to be scientifically valuable and provide practical value to society.One of the scientific fields that can significantly contribute to technological development is physics. Physics is a fundamental science used in future technological developments in creating various super-sophisticated technologies to support the development of more modern industries. As in physics education, it is hoped that graduates will not only have physics knowledge but also skills in life, such as creativity, critical thinking, communication, and collaboration through curriculum development and physics learning by utilizing the Internet of Things (IoT), Virtual reality (VR), Augmented reality (AR), and Artificial Intelligence (AI). Using various efforts such as research and technological development in Physics as well as curriculum development and physics learning to confront the era of society 5.0, we can increase awareness and improve the atmosphere for creating innovation that supports the achievement of Sustainable Development Goals (SDGs).The event organizing committee and editorial team hope you enjoy reading this volume of JPCS. In addition, we would like to express our deepest gratitude to the keynote speakers, invited speakers, and all presenters who have provided valuable contributions to this proceeding and the reviewers for their suggestions and constructive criticism in improving the articles presented. On behalf of the SNF 2023 committee, we thank all parties for supporting this publication. We want to invite the participants again to participate in SNF 2024, held by the Department of Physics FMNS Unesa.List of Seminar Nasional Fisika (SNF) 2023 Committee is available in this Pdf.

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The 2023 3rd International Conference on Energy, Power and Advanced Thermodynamic Systems (EPATS 2023) supported by Tunku Abdul Rahman University and Zhengzhou University is motivated to bridge the scientists, experts, practitioners, and students in the scientific forum through sharing ideas and issues about theoretical and practical knowledge in energy, power and advanced thermodynamic systems.This Conference took place via hybrid form June 30th to July 2nd, 2023 in Dali, China, bringing together more than 100 attendees worldwide. As an annual conference, it’s held in China every year starting from 2021, attracting more than 300 attendees from over 15 countries all around the world. With strong organization team, dependable reputation and wide sponsors globally, EPATS 2023 was even more successful than previous ones.The keynote speeches were provided especially to show the contribution of scholars and experts around the world of energy, power and advanced thermodynamic systems towards research and knowledge sharing. We had four keynote speakers coming mainly from University of Southern Denmark (Denmark), Sun Yat-sen University (China), University of Sharjah (UAE), and University of California (USA). Professor Yun Wang from University of California, USA shared his study Fundamentals, Materials, and Machine Learning of Polymer Electrolyte Membrane Fuel Cell Technology. In this speech, he presented the status of PEM fuel cell development and discussed multiphysics and data-driven modeling approaches for PEM fuel cell design that are actively developed at the UC Irvine. Some fundamental and material aspects critical to fuel cell development were discussed. Besides, examples of material design and operational condition using physical models, machine learning, and genetic algorithms (GA) were presented and explained in detail.The Proceedings of EPATS 2023 involved about 80 papers from various topics including Energy Storage Technology, Distributed Power, Intelligent Substation, Thermophysics and Thermal Engineering, Thermal Fluid Mechanics, etc. The selected papers were checked through a rigorous peer review process, and are published in the present conference proceedings. Reviews were conducted by expert referees to the professional and scientific standards expected of Journal of Physics: Conference Series.We would like to thank the organizing committee and the members of reviewers for their kind assistance in reviewing the papers. We would also extend our best gratitude to keynote speakers for their invaluable contribution and worthwhile ideas shared in the Conference. Last but not the least is our appreciation to Journal of Physics: Conference Series for every process its members conducted to make this volume published.The Committee of EPATS 2023List of Committee Member are available in this pdf.

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The 2023 4th International Conference on Internet of Things, Artificial Intelligence and Mechanical Automation (IoTAIMA 2023) was held via hybrid form in Guangzhou, China during July 21st to 23rd, 2023, following the successes of previous events held in Hangzhou (2020, 2021), and Shanghai (2022). This year the IoTAIMA 2023 aimed to bring together researchers, developers, and users in both industry and academia in the world to discuss emerging issues on Internet of Things, artificial intelligence and mechanical automation, for sharing state-of-art results, and for exploring new areas of research and development.The Conference was organized by Peking University-Wuhan Institute for Artificial Intelligence and co-organized by Central South University School of Automation. More than 80 delegates from home and abroad attended the Conference.The IoTAIMA 2023 was featured with four keynote speeches (by Prof. Deyu Qi, Prof. Jinping Ao, Prof. Ming Jiang, Assoc. Prof. Wei Wei, respectively), and several oral and poster presentations, in which a wide range of topics were covered and the most recent significant results were presented. Prof. Ming Jiang from Sun Yat-sen University, China addressed his speech Massive MIMO Aided Multinetwork 3D Positioning. Exploiting a distributed M-MIMO framework, his team proposed to employ a deep belief network (DBN) to analyze the received signal strengths (RSS) generated by a diffraction model. Next, the preliminary DBN estimates were forwarded to a long-short term memory network (LSTMN), where the trajectory information of the targeted UE can be extracted based on much less historical trajectory information than existing solutions. Then, the three-dimension (3D) coordinates of the UE’s positions can be estimated with a back propagation neural network (BPNN) which combines the outputs of DBN and LSTMN. Finally, extensive simulation results were provided to demonstrate the effectiveness of the proposed BPNN scheme.Quantities of excellent papers evaluated based on their originality, technical or research content, correctness, relevance to conference, contributions, and readability were presented in the Conference Proceedings published by Journal of Physics: Conference Series (JPCS). The topics of these papers include Radio Frequency Identification, Micro-Electro-Mechanical Systems, New Sensing Technology, Unmanned System Control Technology, Industrial Robots and Automatic Production line, etc.With the excellent quality of all the presentations, the IoTAIMA 2023 was a great success. We wish to thank the sponsors of the Conference, and particularly the Technical Program Committee. We would also like to extend our gratitude to all the speakers and authors for sharing scientific ideas and presenting new perspectives with us on related topics. Our appreciation also goes to the editors and other staff of JPCS for the assistance it provided for the publication of this paper volume.The Committee of IoTAIMA 2023List of Committee Member is available in this Pdf.

Preface

The purpose of the three-day 2023 2nd International Conference on Energy Internet and Power Systems (ICEIPS 2023), held via virtual form on August 4th to 6th, 2023 in Chengdu, China, was to create a timely forum for multi-disciplinary discussions related to the recent developments on energy Internet and power systems.As usual, the program of the meeting mainly consisted of keynote speeches, oral presentations and poster presentations, with the former including speeches delivered by three sophisticated professors from different areas. The speeches covered three main topics: i) Challenges and Opportunities of Large Scale Electric Vehicles in Smart Grids with Renewable Generation, by Professor Jahangir Hossain from University of Technology Sydney, Australia; ii) Power System Security and Load Shedding, by Professor Mohamed EL-Shimy from Ain Shams University, Egypt; iii) Load-transfer Strategy for Urban High-Voltage Distribution Network based on Link-Path Model, by Professor Hongwei Li from Southwest Petroleum University, China.In the framework of experimental and theoretical approaches, the Conference gathered about 150 delegates from all over the world and addressed a number of highly relevant aspects of energy Internet and power systems. Covering Green Energy Development Technologies, Energy Internet Technology, Electric Motors and Drives, Smart Grid Power Transmission and Distribution, Intelligent Systems and Methods, etc., the selected contributions of this special issue provide guidance for future interdisciplinary developments. In this way, the multi-scale aspects of energy Internet and power systems should be considered.We received various manuscripts of invited papers and contributions presented at the Conference. All of these have been peer reviewed and are collected in this volume. We would like to thank all the anonymous colleagues who have acted as referees to assess the suitability of the various articles for publication in Journal of Physics: Conference Series. We are confident that the high quality of both invited and contributed papers contained in this Proceedings will be appreciated by the energy and power community.We would like to express our thanks to all the authors for their time and genuine efforts, and to the reviewers for their fruitful comments during the preparation of this volume. We also acknowledge the support provided in various ways by Northeastern University.List of Committee Member is available in the pdf.

JCAP 20th anniversary special issue: editorial

On the occasion of its 20th anniversary JCAP, the Journal of Cosmology and Astroparticle Physics, presents this special issue including a selection of original research articles authored by distinguished scientists, many of whom are part of the JCAP Editorial Board. This collection provides a snapshot of the current status of the field and represents the state of the art in our understanding of the universe on its largest scales through all its messengers. Being “a journal by scientists for scientists”, JCAP is community driven: its aims and scope evolve over time to adapt to changing research trends and is committed to serve the evolving publishing needs of its community with the same dedication and passion of the past two decades for the years to come.

PEREGRINATIONS ON THE STUDY OF THE OPTICAL PROPERTIES OF NONSPHERICAL PARTICLES

PEREGRINATIONS ON THE STUDY OF THE OPTICAL PROPERTIES OF NONSPHERICAL PARTICLES